Eliminate Vernon

You know how to concatenate a potion, because you're a wizard, Harry. You recreate the Draught of Living in pale imitation but enough to kill a human. You make sure Vernon digests the potion by controlling Dudley into giving the poisoned food to his own father.

After Vernon's , it is up to you or Dudley to lead the house. You can either "convince" Aunt Petunia to make your in-charge of the household. Or you can manipulate Dudley in doing your bidding.

The police are still investigating Vernon Dursley's . It is evident that Dudley did but you have all the evidence and removed any traces.

You need Dudley for the next strategy.

What do you think?